File: fp16-frame-lowering.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (22 lines) | stat: -rw-r--r-- 797 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
; RUN: llc < %s -mtriple armv8a--none-eabi -mattr=+fullfp16             | FileCheck %s
; RUN: llc < %s -mtriple armv8a--none-eabi -mattr=+fullfp16,+thumb-mode | FileCheck %s

; Check that frame lowering for the fp16 instructions works correctly with
; negative offsets (which happens when using the frame pointer).

define void @foo(i32 %count) {
entry:
  %half_alloca = alloca half, align 2
; CHECK: vstr.16 {{s[0-9]+}}, [{{r[0-9]+}}, #-10]
  store half 0.0, half* %half_alloca
  call void @bar(half* %half_alloca)

  ; A variable-sized alloca to force the above store to use the frame pointer
  ; instead of the stack pointer, and so need a negative offset.
  %var_alloca = alloca i32, i32 %count
  call void @baz(i32* %var_alloca)
  ret void
}

declare void @bar(half*)
declare void @baz(i32*)